Leitcode Symbology Introduction
Leitcode Overview

Leitcode is a linear barcode symbology used by German Post for sorting and directing mails; so it is also called German Postal 2 of 5 Leitcode, CodeLeitcode, Leitcode, Deutsche Post AG (DHL). Leitcode is an implementation of Interleaved 2 of 5 barcode specification.

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Leitcode Data Encoding Instruction

Leitcode Character Set

Character Set Types: Numeric-only

Character Set Breakdown:
  • 0, 1, 2, 3, 4, 5, 6, 7, 8, 9

Leitcode Data Length

Data Length Types: Fixed-length (13 digits)

(Data Length in digits)

Leitcode Structure Introduction

Leitcode is a variant of Interleaved 2 of 5, with a different check digit. Each data in Leitcode is constructed of 5 elements - 5 bars or 5 spaces, of which two are wide and three are narrow. Each adjacent character is interleaved, alternating the spaces from one character with the bars of the other.

Leitcode is made of 9 parts: start & stop quiet zone, start & stop pattern, ZIP code, street's code number, house number, product code and a check digit.

Quiet Zone

Quiet Zone is also known as Quiet Margin, which is a blank margin surrounding the Leitcode symbol with nothing to print on. It is used for protecting Leitcode symbol.

Start & Stop Pattern

Start & Stop Pattern is a made of 2 bars and a space to indicate the beginning and ending of Leitcode data sequence.

ZIP Code

ZIP Code is also called Postal Code, which indicates postal code of the street address of the recipient. Often, ZIP Code uses the first 5 digits to represent.

Street's Code Number

Street's Code Number is to encode the street name of recipient. The street name has no place in barcode. Therefore, every street name uses 3-digit code to represent.

House Number

House Number is an unencrypted display the house number (3-digits). At house numbers, the 4-digit, are to be further Street identifiers used. Thus, the house number range 0-999 a different street than the house ID number range from 1000 to 1999.

Product Code

Leitcode uses 2-digit code as Product Code to represent the product in mail.

Check Digit

Leitcode check digit is calculated on Modulo 10 algorithm, which may be omitted.